Seoul to Boulder City time converter

Boulder City is 16 hours behind Seoul. When it is 9:00 AM in Seoul, it is 5:00 PM (Tue, Oct 20) in Boulder City.

Seoul KST

Wednesday, October 21, 2026

Boulder City PDT

Tuesday, October 20, 2026

Seoul
South Korea
Wed, Oct 21
KSTUTC+9
Boulder City
Nevada, United States
Tue, Oct 20
PDTUTC-7-16h
Finding your time zone…
Shared working hours (9:00–18:00)

Seoul to Boulder City conversion table

Every hour of today in Seoul and the matching time in Boulder City. Light rows are typical working hours (9:00–18:00).

SeoulBoulder City
12:00 AM8:00 AM−1 day
1:00 AM9:00 AM−1 day
2:00 AM10:00 AM−1 day
3:00 AM11:00 AM−1 day
4:00 AM12:00 PM−1 day
5:00 AM1:00 PM−1 day
6:00 AM2:00 PM−1 day
7:00 AM3:00 PM−1 day
8:00 AM4:00 PM−1 day
9:00 AM5:00 PM−1 day
10:00 AM6:00 PM−1 day
11:00 AM7:00 PM−1 day
12:00 PM8:00 PM−1 day
1:00 PM9:00 PM−1 day
2:00 PM10:00 PM−1 day
3:00 PM11:00 PM−1 day
4:00 PM12:00 AM
5:00 PM1:00 AM
6:00 PM2:00 AM
7:00 PM3:00 AM
8:00 PM4:00 AM
9:00 PM5:00 AM
10:00 PM6:00 AM
11:00 PM7:00 AM

Best time to call or meet

Both sides are at work from 9:00 AM – 10:00 AM in Seoul (5:00 PM – 6:00 PM in Boulder City).

Daylight saving time and the difference

The difference changes during the year because Seoul and Boulder City switch clocks on different dates:

  • Oct 21, 2026 – Nov 1, 2026: -16h
  • Nov 1, 2026 – Mar 14, 2027: -17h
  • Mar 14, 2027 – Oct 21, 2027: -16h

Distance

Seoul and Boulder City are 9,656 km (6,000 miles) apart in a straight line.

More conversions

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Questions and answers

What is the time difference between Seoul and Boulder City?

Boulder City is 16 hours behind Seoul.

What time is it in Boulder City when it is 9 AM in Seoul?

When it is 9:00 AM in Seoul, it is 5:00 PM (Tue, Oct 20) in Boulder City.

When is the best time to call Boulder City from Seoul?

Both sides are at work from 9:00 AM – 10:00 AM in Seoul (5:00 PM – 6:00 PM in Boulder City).

Does the time difference between Seoul and Boulder City change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.